Bug 1308438 - Part 5: Add a test case to test AudioBufferSourceNode with negative playback rate. r?dminor, r?padenot
MozReview-Commit-ID: Ah9SftEfHOp
--- a/dom/media/webaudio/test/mochitest.ini
+++ b/dom/media/webaudio/test/mochitest.ini
@@ -38,16 +38,17 @@ support-files =
[test_AudioBuffer.html]
[test_audioBufferSourceNode.html]
[test_audioBufferSourceNodeEnded.html]
[test_audioBufferSourceNodeLazyLoopParam.html]
[test_audioBufferSourceNodeLoop.html]
[test_audioBufferSourceNodeLoopStartEnd.html]
[test_audioBufferSourceNodeLoopStartEndSame.html]
[test_audioBufferSourceNodeDetached.html]
+[test_audioBufferSourceNodeNegativePlaybackRate.html]
skip-if = (toolkit == 'android' && debug) || os == 'win' # bug 1127845, bug 1138468
[test_audioBufferSourceNodeNoStart.html]
[test_audioBufferSourceNodeNullBuffer.html]
[test_audioBufferSourceNodeOffset.html]
skip-if = (toolkit == 'android') || debug #bug 906752
[test_audioBufferSourceNodePassThrough.html]
[test_audioBufferSourceNodeRate.html]
[test_AudioContext.html]
new file mode 100644
--- /dev/null
+++ b/dom/media/webaudio/test/test_audioBufferSourceNodeNegativePlaybackRate.html
@@ -0,0 +1,40 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+ <title>Bug 1308438 - Test AudioBufferSourceNode with negative playback rate</title>
+ <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+ <script type="text/javascript" src="webaudio.js"></script>
+ <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+var gTest = {
+ length: 2048,
+ numberOfChannels: 1,
+ createGraph: function(context) {
+ var buffer = context.createBuffer(1, 2048, context.sampleRate);
+ for (var i = 0; i < 2048; ++i) {
+ buffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);
+ }
+
+ var source = context.createBufferSource();
+ source.buffer = buffer;
+ source.playbackRate.value = -1;
+ source.start(0, buffer.duration);
+ return source;
+ },
+ createExpectedBuffers: function(context) {
+ var buffer = context.createBuffer(1, 2048, context.sampleRate);
+ for (var i = 0; i < 2048; ++i) {
+ buffer.getChannelData(0)[2047 - i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);
+ }
+ return buffer;
+ }
+};
+
+runTest();
+</script>
+</pre>
+</body>
+</html>